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Comparative Study
. 2003;4(5):R33.
doi: 10.1186/gb-2003-4-5-r33. Epub 2003 Apr 25.

A novel exploratory method for visual recombination detection

Affiliations
Comparative Study

A novel exploratory method for visual recombination detection

Korbinian Strimmer et al. Genome Biol. 2003.

Abstract

A versatile visual approach for detecting recombination and identifying recombination breakpoints within a sequence alignment is presented. The method is based on two novel diagrams - the highway plot and the occupancy plot - that graphically portray phylogenetic inhomogeneity along an alignment, and can be viewed as a synthesis of two widely used but unrelated methods: bootscanning and quartet-mapping. To illustrate the method, simulated data and HIV-1 and influenza A datasets are investigated.

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Figures

Figure 1
Figure 1
Highway and occupancy plots for simulated data with no recombination.
Figure 2
Figure 2
Highway and occupancy plots for simulated data with recombination and balanced trees.
Figure 3
Figure 3
Highway and occupancy plots for simulated data with recombination and unbalanced trees.
Figure 4
Figure 4
Highway and occupancy plots for an HIV-1 gag region alignment containing the recombinant sequence 93BR029. The red vertical lines indicate the two putative breakpoints.
Figure 5
Figure 5
Highway and occupancy plots for the 1918 influenza virus dataset. The window size varies from 400 to 800 bp.
Figure 6
Figure 6
Bootscan plots. (a) HIV-1 data; (b) 1918 influenza virus data.
Figure 7
Figure 7
The quartet-mapping triangle. (a) Barycentric coordinate system; (b) polar representation. In both (a) and (b), C denotes the centroid (1/3, 1/3, 1/3) and P some general point (s1, s2, s3).

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